Bug 2464464 (CVE-2026-43018) - CVE-2026-43018 kernel: Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt
Summary: CVE-2026-43018 kernel: Bluetooth: hci_event: fix potential UAF in hci_le_remo...
Keywords:
Status: NEW
Alias: CVE-2026-43018
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-01 15:08 UTC by OSIDB Bzimport
Modified: 2026-05-01 16:44 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-01 15:08:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt

hci_conn lookup and field access must be covered by hdev lock in
hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed
concurrently.

Extend the hci_dev_lock critical section to cover all conn usage.
Comment 1 Keith Grant 2026-05-01 16:40:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050157-CVE-2026-43018-b74a@gregkh/T
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